BCA may refer to:
Commerce
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- Bangladesh Caterers Association UK
- Bank Central Asia, a private bank in Indonesia
- Boeing Commercial Airplanes
- Book Club Associates
- British Car Auctions
- Broadcasting Company of America, former American Telephone & Telegraph Company subsidiary
- Building and Construction Authority, a Singapore government statutory board
- Business Council of Australia
- Civilian Board of Contract Appeals, a United States government agency
- Model Business Corporation Act
Education
- Bachelor of Computer Application
- Botswana College of Agriculture
- Brethren Colleges Abroad
- Brooklyn Chinese-American Association in Brooklyn, New York City
Sports
- Badminton Confederation of Africa, African badminton organisation
- Barbados Cricket Association
- Billiard Congress of America
- Black Coaches & Administrators, a U.S. organization supporting African American and other minority sports coaches and administrators
- British Caving Association
- British Cheerleading Association
- BC Augsburg, a defunct German association football club
- BC Aichach, a German association football club
Science
- Bicinchoninic acid
- Bicinchoninic acid assay
- Branched-chain amino acid
- Binary collision approximation
Other uses
- Boston Center for the Arts
- Breast cancer awareness
- British Central Africa
- British Chiropractic Association
- Buddhist Churches of America
- Burst Cutting Area